Machine for attaching bed-springs to cross-wire bases



N0. 6|l,|32. Patented Sept. 20, I898. J. P. LEGGETT.

MACHINE FOB ATTACHING BED SPRINGS T0 CROSS WIRE BASES.

(Application filed Dec. 4, 1897.) 4ND Model. 2 Sheets-$haet l.

TIE-iak No. 6ll,l32. Patented Sept. 20, I898.

' J. P. LEGGETT. MACHINE FOR'ATTACHING BED SPRINGS T0 CROSS WIRE BASES.

(Application filed Dec. 4, 1897.) (No Model.) 2 Sheets-Sheet 2.

THE NORRIS warns on, moroumou WASHINGTON, u c.

UNITED i. STATES" PATENT 0 m.

JOSEPH P. LEGGETT, OF CARTHAGE, MISSOURI.

MACHINE FOR ATTAGHING BED-SPRINGS TO CROSS-WIRE BASES.

SPECIFICATION forming part of Letters Patent No. 611,132, datedSeptember 20, 1898.

Application filed December 4, 1897. Serial No. 660,781. (No model.)

To all whom it may concern:

Be it known that I, JOSEPH P. LEGGETT, a citizen of the United States,and a resident of Carthage, in the county of Jasper and State ofMissouri, have invented certain new and useful Improvements in Machinesfor Attaching Springs to Cross-Wire Bases, of which the following is aspecification. I

The object of my invention is to provide a machine by which I mayconveniently, rapidly, and effectively make the connection between thesprings and crossed wire bases which forms the subject-matter of mycopending application, Serial No. 660,780, filed December 4, 1897.

The connection described in my said application is formed by providing aparallel series of wires, each having arches formed at points for thelocation of springs, then locating the springs centrally over the archesin said wires, then introducing lengthwise locking-wires which engagebeneath the arches and over the attaching-coils of the springs, andfinally applying pressure to the arches and spreading them against thesides of the attaching-coils and at the same time depressing theinterlocking wires to form kinks which engage with the arches andattaching-coils and deflecting said attaching-coils permanently intoconformity with the two sets of wires.

The machine forming the subject-matter of my present invention consistsof a number of compressing devices, there being one for each spring tobe attached, each comprising a suitable anvil upon which theinterlocking wires may be compressed, and means forholding the wiresstraightwhile compression is taking place. More particularly described,each of these devices is provided with a depressible anvil uponwhich'the arch is compressed and the straight wires deflected, whichanvil is surrounded by a fixed seat, while the hold-' ing'mean's',preferably in theform of hooks having transverse movement, is locatedoutside of the fixed seat and has connection with the depre'ssibleanvil, so that it draws the wires down over the fixed seat ascompression is taking place. The anvil is further provided withprojecting horns which have intersecting passages between them to holdthe wires in proper position and also serve as means for centering thesprings and holding them in place. The compressing-tool may be operatedin any suitable manner and has sockets which receive theupwardly-project ing horns to prevent displacement of the tool duringcompression.

My invention will be fully understood upon reference to the accompanyingdrawings, in which- Figures 1 and2 are perspective views show in g thearrangement of the interlocking parts before and after subjecting themto the compressing, which is the function of the machine forming thesubject-matter of'this applicatiou. Figs. 3 and 4 are respectively aside'elevation of the machine with the parts arranged preliminarytocompression and a Vertical section of said machine with the parts in theposition occupied at the 'end of the compression and before removal.Fig. 5 is a plan of the machine and parts shown in Figs. 3 and 4. Fig. 6is a perspective view or, the tool employed 'for compressing the parts.Fig. 7 illustrates a machine made up of a series of the compressingdevices shown in Figs. 4 and 5.

The object of my invention is to assemble springs with the base-wires,as shown in Fig. 1, and to permanently bend and interlock such parts, asshown in Fig. 2.

1 represents a convolute spring, the attaching-coil 2 of whichterminates in a downward bond 3.

4 is one of a series of arched steel wires forming one of the mainseries'of attachment, and which wires are assumed to be arranged inparallel relation and have arches 5 at each point along their lengthwhere it is desired to locate a spring. Springs are centered over thearches, and straight transverse wires '6 are introduced endwise, passingabove the attaching-coil and under the arch at each illustrated in Figs.3 to 6.

described; comprises a series of devices, as many as there are springs,one of which is The most essential features are a seat 8 for the spring,the compressing-tool f), and means-such, for example, as hooks 10-forholding down the ends' of the wires and prevent-ing buckling duringcompression. I prefer to make the seat 8 as an annular portion of abed-plate 11, which is formed with segmental slots 11, surroundingtheseat, through which the holding-hooks 10 project, and to arrange withinthe seat a yielding anvil 12, provided with upwardly-projecting horns13, arranged with wireways between them to receive the wires 4, 6, and7, as shown in Fig. 5. The anvil 12 is held normally elevated by aspring 14 in the well 15 and has a base-plate 16 extending outwardly andcarrying the upwardly-extending hooks 10. The anvil'and hooks arerotatable for a limited distance (the wireways being constructed topermit this movement) to provide for moving the hooks into engagementwith the wires 4, 6, and 7 to hold them during compression and' fordisengagement from said wires to avoid interference with them inintroducing them and to permit ready removal of the finished bed. Sincesome of the wires are previously formed with arches at suitableintervals, it follows that when said arches are compressed or flattenedthe length of the wire is necessarily extended, the springs which arepreviously centered over the arches, the transverse wires which havebeen interwoven previous to compressing the arches, and the compressingdevices must move bodily a distance corresponding to the lengthening ofthe arched wires resulting from flattening the arches; but, as shown inFig. 7, the apparatus has as many compressing devices and wire-holdersas there are springs. It is therefore necessary that some provision mustbe made for yielding of all these parts as successive compressions takeplace. each group of these devices in some manner such, for instance, asillustrated in Figs. 4 and 5-so that they move in the direction in whichthe arched wire is extended. One form of such mountingis as follows: 17represents screws engaging in slots 18 in the bed-plate for holding thelatter in place and permitting it to yield bodily in the line of thewire 4 as compression takes place and the arched wires are necessarilyextended. Shrinkage takes place transversely as the straight wires aredepressed; but this is permitted by sliding of the straight wire as thedepressions are formed successively, and sufficient wire is taken up tocompensate as each connection is made.

The tool 9 has sockets 19 to receive the horns 13 and may or may not beprovided with a depression 20, conforming to the arch 5, against whichit presses. The operation of this device is as follows: The arched wiresTo accomplish this, I simply mount are placed in position and thecompressing device adjusted, so that an arch projects in thewire-passage of each anvil. Springs are then placed in position over thearches, being centered by the projecting horns and allowed to rest uponthe fixed seat. The straight main wire (5 and bracing-wire 7, if thelatter is used, are then interwoven in the manner hereinbeforedescribed. The anvil, with the securing-hooks,is then rotated to bring ahook into engagement with each wire as it projects beyond the fixedseat. Compression is then imposed upon the arch through the medium ofthe tool, the anvil, yielding as the tool is depressed. The arch isspread as before described,the straight wires dipped and kinked, and theattaching-coil supported in fixed position on the seat. The kinks do notshow in the wire 6, owing to its position in the view; but such kinkingof wire 6 over the base-coil 2 necessarily results from compressionprecisely the same as shown at 7 in the wire 7. Where the coil restsupon the arched wire, it receives an upward bend, and where the straightwire passes over the coil said coil is forced down to the fixed seat. Bythis means I am enabled to produce the peculiar bends which I haveheretofore described and which are the object of my invention formingthe subject-matter of my copending application, Serial No. 660,780.

Having thus described my invention, the following is what I claim as newtherein and desire to secure by Letters Patent:

1. In a machine for attaching coils to their retaining-wires in themanufacture of springbottoms, the combination of a suitable bed uponwhich to arrange the retaining-wires, retaining devices arranged inproper relation around the point for location of the spring, and meansfor pressing the engaging wires to bend them and forming kinks or thelike for engagement with the springs, substantially as herein explained.

2. In a machine for attaching coil-springs to their retaining-wires inthe manufacture of spring-bottoms, the combination of an anvil havingintersecting ways for the reception of wires, a pressing-tool cooperating with said anvil todeflect the Wires, and retaining means arrangedaround the anvil for engaging the respective wires on opposite sides ofthe anvil and holding them straight while deflection is taking place;the anvil and retaining devices being made yielding, substantially asand for the purposes set forth.

3. In a machine for fixing springs to their securing-wires inspring-bottoms, the combination of a depressible anvil upon which tocompress the wires, a fixed seat surrounding the anvil to receive thecoil of the spring, and means outside of said fixed seat for holding thewires, substantially as set forth.

4:. In a machine of the character described, the combination of thedepressible anvil havin g transverse wireways, a fixed seat surroundingsaid anvil, and a cooperating compressing-tool, substantially as and forthe pu rposes set forth.

5. In a machine of the character described, the combination of the fixedseat, a depressible anvil Within said seat, and retaininghooks locatedoutside of said seat and mounted to move into and out of engagement withthe Wires which they are to retain, substantially as explained.

6. In a machine of the character described, the combination of adepressible anvil having projecting horns with Wire-passages betweenthem, and a compressing-tool having sockets to receive said horns,substantially as and for the purposes set forth.

7. In a machine forattaching springs by compressing the attaching wiresof springbottoms; compressing devices suitably located at points whereit is desired to attach the respective springs, and a mounting uponwhich the respective compressing devices are movably supported, wherebyeach compressing device may move bodily to maintain its position onthebottom-forming Wires and compensate for changes in length of saidWires incident to compression; substantially as explained.

JOSEPH P. LEGGETT.

Witnesses:

H. S. KNIGHT, L. S. N.-GRAHAM.

